Spool or bobbin



(No Model.)

G. 0. BOYNTON.

SPOOL 0B. BOBBIN.

No.- 433,885. Patented Aug. 5, 1890.

UNITED STATES PATENT OFFICE.

GEORGE'O-BOYNTON, OF BOSTON, ASSIGN OR OF ONE-HALF TO GEORGE K.LITTLEFIELD, OF NEWTON, MASSACHUSETTS.

SPOOL OR BOBBIN.

SPECIFICATION forming part of Letters Patent No. 433,885, dated August5, 1890.

Application filed October 17, 1889- Serial No. 327,279. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE O. BOYNTON, of Boston, in the county ofSuffolk and State of Massachusetts, have invented certain new and usefulImprovements in Spools or Bobbins, of which the following is a full,clear, and exact description.

This invention relates to a spool or bobbin for use more particularly inmachines relating to spinning; and the invention consists of coveringand protecting the edges of the heads of bobbins or spools with metal,all substantially as hereinafter fully described, reference being had tothe accompanying sheet of drawings, in which- Figure 1 represents inside View a spool or bobbin having this invention applied thereto;

Fig. 2, a view of one end of a bobbin, showing the head in section;Figs. 3 and 4, detail sections of the spool-head, to be hereinafterreferred to.

In the drawings, A represents the barrel, and B B the heads, of a spoolor bobbin, all constructed as usual in spools or bobbins for machinesrelating to spinning and needing no particular description herein,except so far as the present invention is concerned. On the edge of eachhead of the spool is a sheet-metal plate 0, which extends around on eachside of the same a short distance, and is preferably made of a metalthat can be spun around the edge of the head to cover it in accordancewith this invention. The metal for covering and protecting the edge ofeach head can be prepared in any of the usual ways for spinning it onthe head, preferably in the form of a fiat-ring shape of the desiredwidth, and then pressed up into shape and spun around the edges in anyof the usual and well-known ways of spinning metal.

Each head of the spool is first prepared for receiving its metalcovering by making, preferably, a circumferential groove D in its edgeand preferably rounding its corners a b and making grooves d e in itssides, as shown in Fig. 2. The metal is placed upon the edge of thehead, and then at each side is turned over the round corner, and each ofits edges f g pressed into its respective groove d e in the sides of thehead, after which the metal at its central part It is pressed down intothe circumferential groove D, and made to fit closely and firmly theedge of the head.

In Fig. 3 the groove D is dispensed with and the edge of the head madeflat; but the metal is forced over the sides of the edge and its edgesare forced into the side grooves, as before. g

In Fig. 4 the metal is shown as forced around the edge of the head andthe edge portions of the strip into wider grooves in the sides andturned back partially, as shown, one side it of the head, which is theoutside, being turned off more than the other. By protecting both sidesof the edge of the head of the spool by metal and having it bent roundand secured in the side grooves, including the central peripheralgroove, the shape and form of the metal secures great strength to thesame and to such an extent that the spool-head, when made of wood, canbe made in one piece, as shown, being much cheaper than when made of twopieces or thicknesses of wood and glued together. It also prevents anysplitting or breaking of the edge or any Warping of the head, and withthe edges of the metal projecting in the sides of the head the metalstrip is the more firmly secured in place, advantages which are verydesirable in such spools.

Obviously this invention is applicable to spools for other purposes aswell as for the use herein particularly described.

Having thus described my invention, what I claim is l. A spool havingthe edge of one or each of its heads covered with a metal strip whichextends around the edge and a short distance on each side of the headand each edge of the metal strip being bent inward and disposed-in agroove in its respective side, for the purpose specified.

2. A spool having the edge of one or both of its heads covered with ametal strip which extends around the edge and a short distance on eachside of the head, each edge of the metal strip being bent inward anddisposed in a groove in its respective side andits central portiondepressed into a circumferential groove in the edge of the head, for thepurpose specified.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

GEORGE O. BOYNTON. WVitnesses:

EDWIN W. BROWN, CARRIE E. NICHOLS.

